search for: brnzp

Displaying 1 result from an estimated 1 matches for "brnzp".

2018 Jan 29
2
How to use tablegen to describe branches where the status register is implicitly set?
I'm working on writing a backend for a processor that only has one Branch instruction, a BRnzp, where it branches on a status register (NZP: Negative, Zero, Positive) based on what the result of the last arithmetic operation was. It's implicitly set, nowhere in userspace. Basically, it follows the format of: ADD .... BR 010 ... (Branches if the result of the ADD was zero). Uncondition...